KR20190072332A - Pre-treatment agent composition for digital textile printing of nylon fabric and pretreatment method using the same - Google Patents

Abstract

The present invention relates to a pre-treatment agent composition for digital textile printing of a nylon fabric and a pre-treatment method using the same. The pre-treatment agent composition for digital textile printing according to the present invention comprises: 1 to 12 wt% of a thickening agent including hydroxyethyl cellulose; 3 to 15 wt% of a hydrotrope agent including an urea-based compound; 0.3 to 6 wt% of nonvolatile acid; and water. By pre-treating the nylon fabric using the same, a digital printing textile product with high color and high sharpness is obtained.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pretreatment composition for digital printing of nylon fabrics and a pretreatment method using the same.

The present invention relates to a pretreatment composition for digital textile printing,

The present invention relates to a pretreatment method using a nylon fabric,

Pre-treatment formulation to improve color density and sharpness at dye printing (DTP)

Water and a dye with high transparency using it.

Relates to a preprocessing method for digital printing.

Printing is a dyeing technique that can express various colors and patterns.

Has come. However, recent changes in fashion are fast and colorful and sophisticated design

To cope with the situation of the market demanding

Digital printing (DTP) technology is becoming increasingly popular. Digital print technology

Computer hardware and CAD technology applied to textile printing, screen

Compared with conventional printing method of roller method, simplification of process, short lead time,

It is expected to be a technology that can improve productivity such as lottery. Then

In order to apply it to the dyeing of fibers,

Hardware, software for operating it, inks applicable to various kinds of fibers

, And dye ink is adsorbed and adhered to the fiber as much as possible without blurring.

A variety of technologies such as a pretreatment agent and treatment technology for a fiber should be developed in a complex manner

All.

Of these technologies, in particular the development of pretreatment agents and pretreatment methods,

It is a prerequisite for production, but technological development in this field is still systematic.

.

That is, when a digital print job is performed on a fabric, the low viscosity

And the three-dimensional surface structure of the fabric,

So that it becomes impossible to express the hue and pattern. Conventional screen printing or rollers

In the case of printing, it is possible to increase the viscosity by adding a thickener to the ink,

However, in the case of digital printing, when the resin is added to the ink solution,

It is impossible to apply this method because there is a problem that the jig is clogged.

Therefore, in digital printing, preprinting is performed on the fabric to be printed,

There is a tendency to develop a method to prevent

It is possible to apply only to

In particular, nylon fabrics are characterized by their surface characteristics and filament yarn characteristics,

And the resulting smearing becomes a big problem, and as a result,

The result is that the sharpness is poor, and until now,

It has been recognized that it is difficult to produce high quality printing products.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems,

By using digital printing technology, color density is high and sharpness is excellent.

I have developed a preprinting composition for digital printing to make printed products available

It is used to pre-treat nylon fabrics to enable high-quality digital printing

The present invention is directed to a method of providing a service to a user.

In order to accomplish the above object, the present invention provides a digital printing fabric for nylon fabric

The treating agent composition comprises 1 to 12% by weight of a hydrous ethylcellulose-containing foam,

3 to 15 wt% of a hydrotrope agent containing a rare earth compound, and 0.3 to 6 of a nonvolatile acid

% Water and water.

In the above composition, hydroxyethyl cellulose has high color development and high sharpness

As a thickening agent used for obtaining a dyed product, if it is used in an amount below the above range

The desired color and sharpness can not be obtained,

Even if the coloring property or the sharpness property is not improved,

Resulting in damage.

The above-mentioned hydroxyethyl cellulose is used together with guar gum, polyacrylic acid

Based, sodium polyacrylate-based, methylcellulose-based, ethylcellulose-based, and carboxy

Hydroxymethylcellulose-based, hydroxyethylcellulose-based, sodium alginate-based,

Methyl-2-hydroxyethyl cellulose system, hydroxyethyl starch

starch or the like may be mixed in the range of 5 wt% or less. These are

Mixing of other horses can reduce the sharpness of dyeing,

However, when hydroxyethylcellulose is used alone,

It is possible to obtain a tactile improvement effect due to the improvement in the palatability,

Can be used.

Preferably, for example, sodium alginate, guar gum,

0.5 ~ 2.0 wt%, respectively, in order to improve the feel due to the improvement in resistance

And sodium polyacrylate and polyacrylic acid

(Polyacrylic acid) and the like are added in an amount of 0.5 to 2.0 wt%

Improves strength.

The hydrotrope agent is used in a small amount of water during the digital printing process

Dissolve the dye and the homogeneous component, absorb moisture vapor condensed during the heat,

It plays a role in spreading the dye on the dyeing cloth. The addition of this element

In the case of digital printing, penetration of acid ink into nylon fiber is improved,

And the effect of improving the sharpness can be obtained. In order to obtain the above effect,

The droptrop agent is preferably used in a range of 3 to 15% by weight.

Examples of urea-based compounds used as hydrotropes include urea (Urea), thio

Thiourea, Hydroxyurea,

Acetylthiourea, N'-benzoyl, N-

Diethylthiourea (N'-benzoyl, N-diethyl

thiourea, 1-cyanoisourea, 1,1'-

Diethylurea (1,1'-diethylurea), 2,5-dithiobiurea

(2,5-dithiobiurea), N-butylurea, N-

N-phenylthiourea, 1,3-dipropylpyrrole

(1,3-dipropylurea).

The non-volatile acid can be used to enhance the fixation of the acid dye by adjusting the pH during dyeing

It does not volatilize during the drying process,

A non-volatile acid is used. Of nonvolatile acids used

Examples of the inorganic acid include citric acid, ammonium sulfate,

Ammonium tartrate, Yuan, Glycolic acid, Tartaric acid

Ammonium phosphate, and sodium phosphate monohydrate. The amount of non-volatile acid used is

May vary depending on the kind of the acidic ink and the kind of the nonvolatile acid used,

Generally, a range of 0.3 to 6% by weight is used.

Preferably, the pretreatment composition contains 0.5 to 3% of the fluorinated water repellent

More agents can be added. The fluorine-based water repellent agent is used to adjust the hydrophilicity of the pretreatment agent

In order to prevent the ink liquid from spreading, the function of improving the sharpness

do.

On the other hand, the effect of improving the anti-smudge property of the fluorine-based water repellent agent,

Silica having adsorptivity for improving the sharpness in

A silicon component can be further added. The silica component can be, for example, sodium

Lt; RTI ID = 0.0 >% < / RTI > by weight of the total composition based on the silicate solution

.

In addition, the pretreatment composition of the present invention may contain a dye penetrant, a reducing agent, a preservative, etc.

Can be added.

The dye penetrant is used to control the permeability of the adhesive and ink components in the fabric during digital printing

It is used to improve the acid resistance and inner water-based penetrant.

Use it. Examples of the penetrating agent include sulfosuccinate type

Anionic surfactants, and an appropriate amount is 0.01 to 0.2%

Range.

The reducing agent is decomposed in a dissolving process in which the polysaccharide-

Reducing groups are generated to reduce the dye by reducing power according to the pH in the foaming agent

And the like. Especially for long-term storage,

This phenomenon must be prevented beforehand by adding

All. Examples of the reducing agent to be used include a nitrobenzenesulfonic acid salt system, a sodium chlorate system,

And an anionic compound of sodium sulphate of tribenzenesulfonate, and the like.

The amount used is 0.5 to 4% by weight of the total preprocessing composition.

When the preservative composition prepared as described above is stored for a long period of time,

, Which may affect the quality of the final print

You should select the type that does not fit. These types include Benz

Benzisothiazole-based compounds, and a suitable amount is the total amount

0.2 to 1% by weight of the pretreatment composition.

The pretreatment method for digital printing of a nylon fabric according to the present invention is characterized in that,

The preprinting composition for digital printing according to the present invention is applied to a nylon fabric by padding or coating

And then dried.

As described above, the pretreatment composition having a low viscosity of about 4,000 cps or less, that is, about 100 to 3,500 cps

Is provided with a padding method at a pickup ratio of about 30 to 55%, and then dried to produce a digital print

. At a viscosity higher than the above viscosity, a knife coater or the like is used

To the surface of the fabric in a coating manner. However, the use of the above-

The higher the amount, the higher the viscosity. Depending on the padding method,

The granting becomes impossible.

Therefore, when the concentration of the hydroxyethyl cellulose is 4 to 12% by weight and the viscosity is

When it is 4000 cps or more, a coating method is applied to the surface of the nylon fabric,

Preprocessing. Preferably, a pretreatment agent having a viscosity in the range of 8,000 to 50,000 cps

The composition is prepared and applied in a coating manner.

In order to obtain more high-quality dye, firstly, by padding operation,

After the treatment composition is applied, the above-mentioned pretreatment agent of high concentration and high viscosity is coated

Or the like.

Drying is carried out at a temperature of about 115 to 120 ° C for about 2 minutes.

As described above, the pretreatment composition having a high viscosity is applied by a coating method,

Not only the sharpness of dyeing is greatly improved, but also the color intensity

It is possible to obtain a high-quality dyeing material excellent in color development.

The pretreatment is performed on the nylon fabric using the pretreatment composition according to the present invention

When high-quality digital printing is carried out, the color and sharpness of the nylon fabric

High-quality high-quality dyed material can be obtained.

Specific embodiments of the invention can be understood in more detail by reference to the claims.

Claims (3)

1 to 12% by weight of a hydrogel compound containing hydroxyethyl cellulose and a urea compound
3 to 15% by weight of a hydrotrope agent, and 0.3 to 6% by weight of a nonvolatile acid and water
Pre-processing for digital printing of nylon fabrics characterized by
/ RTI > The composition according to claim 1, which comprises 1 to 3% by weight of the total composition of a fluorinated water repellent agent
A pretreatment composition for digital printing of nylon fabrics characterized by: A process for preparing the hydroxyethylcellulose of the pretreatment composition according to Claim 1 or 2
And the viscosity is 4,000 cps or more,
Characterized in that it is provided on the surface of water in a coating manner and dried.
Is a pre-treatment method for digital printing of nylon fabrics.